Quality requirements are often broad and hard to operationalize. The arc42 quality model Q42 provides a pragmatic structure to navigate qualities, requirements, and standards.
Start with the focused graph for a quick overview, switch to the full graph to inspect deeper relations, or use textual navigation for direct lookup of quality terms.
Double-click a node to open its definition, related qualities, and concrete requirements.
| Dimension | What It Covers |
|---|---|
| #reliable 104 | Perform specified functions without interruptions or failures |
| #flexible 44 | Adapt to changes in requirements, contexts, or system environment |
| #efficient 71 | Perform within time, capacity and resource parameters |
| #usable 102 | Enable users to work safely, effectively and efficiently |
| #secure 45 | Protect data and defend against attack patterns |
| #safe 29 | Avoid states endangering life, health, or environment |
| #maintainable 28 | Analyze, modify, test and evolve with predictable effort |
| #suitable 59 | Meet stated and implied needs of stakeholders |
| #operable 62 | Easy to deploy, operate, monitor and control |
Read more in the introduction to the Q42 quality model.